Home / 15,636,697,608.12-21,578,489,396.94-8,499,686,783.76

Finding the Fourth Proportional to 15,636,697,608.12, 21,578,489,396.94 and 8,499,686,783.76

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Solution

The fourth proportional to 15,636,697,608.12, 21,578,489,396.94 and 8,499,686,783.76 is: 11,729,484,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,636,697,608.12 : 21,578,489,396.94 = 8,499,686,783.76 : x
  2. Step 2: Convert to fraction form
    15,636,697,608.12/21,578,489,396.94 = 8,499,686,783.76/x
  3. Step 3: Cross multiply
    15,636,697,608.12x = 21,578,489,396.94 × 8,499,686,783.76
  4. Step 4: Simplify right side
    15,636,697,608.12x = 183,410,401,140,676,198,400
  5. Step 5: Solve for x
    x = 183,410,401,140,676,198,400/15,636,697,608.12
  6. Step 6: Final answer
    x = 11,729,484,430.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.